中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

296 records (took 0.029 seconds)

    33.
    发明专利
    未知

    公开(公告)号：AT488975T

    公开(公告)日：2010-12-15

    申请号：AT04712323

    申请日：2004-02-18

    Applicant: QUALCOMM INC

    Inventor： MALLADI DURGA ,  WILLENEGGER SERGE ,  ZHANG XIAOXIA

    IPC: H04W36/24 ,  H04W72/04 ,  H04B7/26 ,  H04L1/00 ,  H04W36/18 ,  H04W36/26 ,  H04W36/38 ,  H04W52/40 ,  H04W72/12

    Abstract: Systems and methods for setting parameters for transmissions of data from a mobile station to a base station in a wireless communications system. One embodiment comprises a method including a network detecting a mobile station entering or leaving soft handoff and responsively modifying a transmission parameter. The transmission parameter may comprise frame duration, wherein if the mobile station enters soft handoff, the frame duration is set to a larger value and if the mobile station leaves soft handoff, the frame duration is set to a smaller value. The network may determine whether the mobile station should enter or leave soft handoff based upon PSMMs and may send handoff direction messages (HDMs) to the mobile station, thereby causing the mobile station to enter or leave soft handoff and to set the transmission parameter accordingly.

    Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system
    37.
    发明专利
    Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system 未知

    公开(公告)号：AU2002354613C1

    公开(公告)日：2009-01-08

    申请号：AU2002354613

    申请日：2002-07-09

    Applicant: QUALCOMM INC

    Inventor： GRILLI FRANCESCO ,  PARVATHANATHAN SUBRAHMANYA ,  WHEATLEY CHARLES E III ,  WILLENEGGER SERGE

    IPC: H04B1/707 ,  H04B7/26 ,  H04W56/00 ,  H04W92/20

    Abstract: Schemes to time-align transmissions from multiple base stations to a terminal. To achieve time-alignment, differences between the arrival times of transmissions from the base stations, as observed at the terminal, are determined and provided to the system and used to adjust the timing at the base stations such that terminal-specific radio frames arrive at the terminal within a particular time window. In one scheme, a time difference between two base stations is partitioned into a frame-level time difference and a chip-level time difference. Whenever requested to perform and report time difference measurements, the terminal measures the chip-level timing for each candidate base station relative to a reference base station. Additionally, the terminal also measures the frame-level timing and includes this information in the time difference measurement only if required. Otherwise, the terminal sets the frame-level part to a predetermined value (e.g., zero).

    Transport format combination selection for compressed mode in a W-CDMA system
    38.
    发明专利
    Transport format combination selection for compressed mode in a W-CDMA system 未知

    公开(公告)号：AU2002343720B2

    公开(公告)日：2008-11-20

    申请号：AU2002343720

    申请日：2002-11-12

    Applicant: QUALCOMM INC

    Inventor： VAYANOS ALKINOOS HECTOR ,  BLANZ JOSEF ,  WILLENEGGER SERGE

    IPC: H04J13/00 ,  H04B7/005 ,  H04B7/26 ,  H04W28/18 ,  H04W52/34

    Abstract: Techniques for determining valid (i.e., supported) TFCs from among all configured TFCs for normal and compressed modes. These techniques maintain sufficient historical information such that 'TFC qualification' may be accurately performed. In a first scheme, Tx_power-requirement states are maintained for different combinations of each TFC. One combination is applicable for each TFC at each TFC interval, and valid TFCs are determined from applicable combinations in the proper state(s). In a second scheme, two Tx_power_requirement states are maintained for each TFC for the normal and compressed modes. In a third scheme, a single Tx_power_requirement state is maintained for each TFC for both modes based on a particular relative power requirement. In a fourth scheme, Tx_power_requirement states are maintained for a set of relative 'bins' that cover the total range of required transmit power for all TFCs. And in a fifth scheme, a set of relative power requirement thresholds are maintained.

    Method and apparatus for data symbol and control symbol multiplexing
    40.
    发明专利
    Method and apparatus for data symbol and control symbol multiplexing 未知

    公开(公告)号：AU2007292396A1

    公开(公告)日：2008-03-13

    申请号：AU2007292396

    申请日：2007-09-04

    Applicant: QUALCOMM INC

    Inventor： MALLADI DURGA PRASAD ,  WILLENEGGER SERGE ,  MONTOJO JUAN

    IPC: H04L1/06 ,  H04L27/26

    Abstract: System (s) and method (s) are provided for transmitting data code Symbols and control code symbols spanning disparate transmission time intervals in the uplink. Data and control symbols that overlap in time-domain within a transmission time interval are- multiplexed and transmitted employing resources scheduled for data transmission (1030), whereas data and control code symbols that are not multiplexed are transmitted in respective allocated resources (1040). Multiplexing in conjunction with localized and distributed resource scheduling preserves the single-carrier characteristics of a single-carrier frequency division multiple access system.

Patent Agency Ranking